Thumping Behind Drivers Side Seat During Left Turns?
Thumping Behind Drivers Side Seat During Left Turns?
Howdy! Well I'm stymied and so is my local Ford shop. My 1999 has had an odd thumping sound behind the driver side seat area when I veer or turn left. The thumping is sporadic. I took it to Ford last week and they suspected both radius arm bushings were worn out on both sides and replaced them. They also replaced the long drag links on both sides. They then did a four wheel alignment and lubed everything. The rest of the front end is basically new from the P.O. After dropping some good coin, the thumping has started again. I took it back again today and drove with the Ford tech for 20 minutes and could not replicate the thumping.
The tech told me all is tight with the front end and they can't find a thing.
Pulling out of the shop to head home I made a left turn and the thumping started again.
I'll be getting the iPhone out with the bride and son to try to get this anomalie recorded but as of tonight I'm lost in space.
Anybody been there, done that, with a situation like this?
Thanks!
The tech told me all is tight with the front end and they can't find a thing.
Pulling out of the shop to head home I made a left turn and the thumping started again.
I'll be getting the iPhone out with the bride and son to try to get this anomalie recorded but as of tonight I'm lost in space.
Anybody been there, done that, with a situation like this?
Thanks!
- skater
- Site Admin
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- B190 Year: 1991
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Re: Thumping Behind Drivers Side Seat During Left Turns?
That's a weird one. If it sounds like it's behind the driver's seat, I would suspect something in the left rear, rather than left front.
Another option is that it's something in the van or on the van that's banging around when you go around a left turn, like a loose awning (if you have one on that side).
I'd also check the tires (all four) for any kind of odd problems. Try rotating them and see if the noise moves, too.
Of course, these are just guesses.
Another option is that it's something in the van or on the van that's banging around when you go around a left turn, like a loose awning (if you have one on that side).
I'd also check the tires (all four) for any kind of odd problems. Try rotating them and see if the noise moves, too.
Of course, these are just guesses.
1991 Airstream B190 - bought, 2005; sold, 2011; bought 2017
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
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- Seasoned Traveler
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- B190 Year: 1994
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Re: Thumping Behind Drivers Side Seat During Left Turns?
Check the generator box, it might be loose in there. Good luck, I hate phantom problems, soooooo damned irritating!!!
- Tucsonan
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Re: Thumping Behind Drivers Side Seat During Left Turns?
Is it one thump, or continuous? maybe rear differential?
1994 B190, Sahuarita Arizona
"... but it's a dry heat!"
"... but it's a dry heat!"
Re: Thumping Behind Drivers Side Seat During Left Turns?
Mystery solved! Kind of........... The thumping, when turning or veering left, only happens when the generator is running. I checked the box, clearance, exhaust mounts, etc. I can't figure it out. Ugh
- lido14co
- Seasoned Traveler
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Re: Thumping Behind Drivers Side Seat During Left Turns?
Why are you driving around with the generator running?
Cliff
Cliff
Re: Thumping Behind Drivers Side Seat During Left Turns?
We were driving around on a really hot day and my son in the back said it was hot even with the dash A/C running on high. I turned on the generator and fired up the cabin roof A/C. Did this to exercise the generator too. Is it not good to run the generator and roof a/c while driving?
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- Seasoned Traveler
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Re: Thumping Behind Drivers Side Seat During Left Turns?
We've driven with the generator running and the rooftop A/C on. Don't see any reason why this shouldn't be done. I can't imagine what part of that equation would cause something to go thump.SeaQuinn wrote:We were driving around on a really hot day and my son in the back said it was hot even with the dash A/C running on high. I turned on the generator and fired up the cabin roof A/C. Did this to exercise the generator too. Is it not good to run the generator and roof a/c while driving?
We sold our 1998 B190, V-10
Currently own a 2010 Airstream Interstate
Currently own a 2010 Airstream Interstate
Re: Thumping Behind Drivers Side Seat During Left Turns?
I have also driven a couple of times with the generator and roof AC running. I've never had a problem doing this and there was no thump while driving.
Mike
Mike
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- Weekend Camper
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Re: Thumping Behind Drivers Side Seat During Left Turns?
I've had a bad generator exhaust hanger make a similar sound when the generator is running and its exhaust comes into contact with a vehicle frame member. Lateral acceleration would make this more likely.
It's easy to visually a defective exhaust hanger in under one minute. Just follow the generator exhaust pipe.
Cummins Onan (155-2174 (X)) Exhaust Hanger.
It's easy to visually a defective exhaust hanger in under one minute. Just follow the generator exhaust pipe.
Cummins Onan (155-2174 (X)) Exhaust Hanger.
'94 B190 w/ 460
Re: Thumping Behind Drivers Side Seat During Left Turns?
Under the rig I will go Thanks for the suggestion and I'll let you know how it goes. Where did you find the replacement part?